Best Buy Interview Question

What is the difference between a React class component and function component? What are the React lifecycle methods and what order do they appear in? How would you write the lifecycle methods using hooks? How does React work internally? What makes it fast? What is a React component? Write a Java function to remove all vowels from a string. What makes an API Restful? What are Websockets and Web hooks and how are they used? How does authentication work? Describe how you would design a web application from frontend to backend.